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Test Kennung:1.3.6.1.4.1.25623.1.0.881463
Kategorie:CentOS Local Security Checks
Titel:CentOS Update for dhclient CESA-2012:1141 centos6
Zusammenfassung:The remote host is missing an update for the 'dhclient'; package(s) announced via the referenced advisory.
Beschreibung:Summary:
The remote host is missing an update for the 'dhclient'
package(s) announced via the referenced advisory.

Vulnerability Insight:
The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows
individual devices on an IP network to get their own network configuration
information, including an IP address, a subnet mask, and a broadcast
address.

A denial of service flaw was found in the way the dhcpd daemon handled
zero-length client identifiers. A remote attacker could use this flaw to
send a specially-crafted request to dhcpd, possibly causing it to enter an
infinite loop and consume an excessive amount of CPU time. (CVE-2012-3571)

Two memory leak flaws were found in the dhcpd daemon. A remote attacker
could use these flaws to cause dhcpd to exhaust all available memory by
sending a large number of DHCP requests. (CVE-2012-3954)

Upstream acknowledges Markus Hietava of the Codenomicon CROSS project as
the original reporter of CVE-2012-3571, and Glen Eustace of Massey
University, New Zealand, as the original reporter of CVE-2012-3954.

Users of DHCP should upgrade to these updated packages, which contain
backported patches to correct these issues. After installing this update,
all DHCP servers will be restarted automatically.

Affected Software/OS:
dhclient on CentOS 6

Solution:
Please install the updated packages.

CVSS Score:
6.1

CVSS Vector:
AV:A/AC:L/Au:N/C:N/I:N/A:C

Querverweis: Common Vulnerability Exposure (CVE) ID: CVE-2012-3571
BugTraq ID: 54665
http://www.securityfocus.com/bid/54665
Debian Security Information: DSA-2516 (Google Search)
http://www.debian.org/security/2012/dsa-2516
Debian Security Information: DSA-2519 (Google Search)
http://www.debian.org/security/2012/dsa-2519
http://security.gentoo.org/glsa/glsa-201301-06.xml
http://www.mandriva.com/security/advisories?name=MDVSA-2012:115
http://www.mandriva.com/security/advisories?name=MDVSA-2012:116
RedHat Security Advisories: RHSA-2012:1140
http://rhn.redhat.com/errata/RHSA-2012-1140.html
RedHat Security Advisories: RHSA-2012:1141
http://rhn.redhat.com/errata/RHSA-2012-1141.html
SuSE Security Announcement: openSUSE-SU-2012:1006 (Google Search)
http://lists.opensuse.org/opensuse-updates/2012-08/msg00030.html
http://www.ubuntu.com/usn/USN-1519-1
Common Vulnerability Exposure (CVE) ID: CVE-2012-3954
http://www.securitytracker.com/id?1027300
CopyrightCopyright (C) 2012 Greenbone AG

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